Composite molecular sieve in ten-element cyclic structure and its synthesis process
A composite molecular sieve and ten-membered ring technology, which is applied in the field of preparation of the above-mentioned composite molecular sieve, can solve the problems of prolonging the process flow, increasing the difficulty of operation, increasing investment costs, etc., and achieves the effects of high yield, low pour point and high viscosity index
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[0025] Example 1
[0026] 130 grams of 85% orthophosphoric acid was added to the mixture of 80 grams of pseudo-boehmite (ignition loss 32.5%), 15 grams of hydrogen-form ZSM-23 molecular sieve and 502 grams of water, stirred for 3 hours, and then added 136 grams of bismuth N-Propylamine, and finally 73.9 grams of 30% silica sol was added. The molar composition of silicoaluminophosphate colloid is: Al 2 O 3 : P 2 O 5 : SiO 2 :R:H 2 O=1.0:1.0:0.6:2.4:56, the amount of ZSM-23 molecular sieve added is the amount of silica-aluminophosphate colloid (Al 2 O 3 +P 2 O 5 +SiO 2 ) 8% of the total weight. After stirring for 12 hours, it was transferred to a 1000 ml autoclave. After sealing, the stirring speed was adjusted to 300 rpm, the temperature was started, and the temperature was raised to 200° C. in 4 hours, and hydrothermal crystallization was performed for 48 hours. After the completion of crystallization, the autoclave was placed in water for rapid cooling, and the product was filter...
Example Embodiment
[0027] Example 2
[0028] 130 grams of 85% orthophosphoric acid, add to the mixture of 80 grams of pseudo-boehmite (ignition weight loss of 32.5%) and 502 grams of water, stir for 3 hours, add 15 grams of potassium type ZSM-22 molecular sieve raw powder, stir for 3 Hour, then add 136 grams of di-n-propylamine, and finally add 73.9 grams of 30% silica sol. The molar composition of silicoaluminophosphate colloid is: Al 2 O 3 : P 2 O 5 : SiO 2 :R:H 2 O=1.0:1.0:0.6:2.4:56, the added amount of ZSM-22 molecular sieve is in the silica-aluminophosphate colloid (Al 2 O 3 +P 2 O 5 +SiO 2 ) 8% of the total weight. After stirring for 12 hours, transfer to a 1000 ml autoclave. After sealing, adjust the stirring speed to 300 rpm, start to heat up, heat up to 120°C in 4 hours, hydrothermally crystallize for 12 hours, and then heat up to 200°C in 4 hours. Thermal crystallization for 48 hours. After the completion of crystallization, the autoclave was placed in water for rapid cooling, the product...
Example Embodiment
[0029] Example 3
[0030] 130 grams of 85% orthophosphoric acid, add to the mixture of 80 grams of pseudo-boehmite (ignition weight loss of 32.5%) and 502 grams of water, stir for 3 hours, add 15 grams of sodium type ZSM-5 molecular sieve powder, stir for 3 Hour, then add 136 grams of di-n-propylamine, and finally add 73.9 grams of 30% silica sol. The molar composition of silicoaluminophosphate colloid is: Al 2 O 3 : P 2 O 5 : SiO 2 :R:H 2 O=1.0:1.0:0.6:2.4:56, the added amount of ZSM-5 molecular sieve is in the silica-aluminophosphate colloid (Al 2 O 3 +P 2 O 5 +SiO 2 ) 8% of the total weight. After stirring for 12 hours, transfer to a 1000 ml autoclave. After sealing, adjust the stirring speed to 300 rpm, start to heat up, heat up to 120°C in 4 hours, hydrothermally crystallize for 12 hours, and then heat up to 200°C in 4 hours. Thermal crystallization for 48 hours. After the completion of crystallization, the autoclave was placed in water for rapid cooling, and the product was ...
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